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LD1085：3 A low drop positive voltage regulator: adjustable and fixed

The LD1085 is a low drop voltage regulator able to provide up to 3 A of output current. Dropout is guaranteed at a maximum of 1.2 V at the maximum output current, decreasing at lower loads. The LD1085 is pin-to-pin compatible with the older 3-terminal adjustable regulators, but offers better performance in terms of drop and output tolerance.

Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085 quiescent current flows into the load, thus increase efficiency. Only a 10 μF minimum capacitor is need for stability.

The device is supplied in TO-220, TO-220FP, D²PAK and D²PAK/A packages. On-chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1% at 25 °C.

Key Features

• Typical dropout 1.3 V (at 3 A)
• Three terminal adjustable or fixed output voltage 1.8 V, 2.5 V, 3.3 V, 5 V
• Guaranteed output current up to 3 A
• Output tolerance ± 1% at 25 °C and ± 2% in full temperature range
• Internal power and thermal limit
• Wide operating temperature range -40 °C to 125 °C
• Package available: TO-220, TO-220FP, D²PAK, D²PAK/A
• Pinout compatibility with standard adjustable VREG

Product Specifications

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Quality & Reliability